physics help
The distance between the midponts of two metal balls.P and Q,respectively of masses 55 kg and 70 kg is 80 cm calculate the gravitational force that P exerts on Q answer F=Gm1m2/r^2 F=(6,67x10^-11)(55kg)(70kg)/(80cm) F=4.01x10^-11..... Is it correct is correct (b)give only the ...October 11, 2015

Physics
A 61 - kg ice skater coasts with no effort for 61 m until she stops. If the coefficient of kinetic friction between her skates and the ice is μk=0.10, how fast was she moving at the start of her coast?October 6, 2015

thesis help
Need help finding thesis When Bullying Turns Deadly: Can It Be Stopped? In the past four weeks, four teenagers killed themselves after being harassed by schoolmates. Technology is quickly changing how kids bully one another. Here are some ways to stop the problem. I think the ...September 15, 2015

College Chemistry
When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 7.59 g of C6H6 is added to 5.69 kg of water at 21.0°C, what is the final temperature of the water?September 15, 2015

College Chemistry
A 43.70 g sample of a substance is initially at 24.7 °C. After absorbing 1757 J of heat, the temperature of the substance is 120.5 °C. What is the specific heat (c) of the substance?September 15, 2015

thesis
Where is the thesis in this please help Bullies can be anywhere, but there's no place they show up more than in schools, and no time more than in September. Once the academic year starts, the complicated social hierarchy of a campus  popular kids, nerdy kids, ADHD ...September 15, 2015

Statistics
The distribution of heights of women aged 20 to 29 is approximately normal with a mean of 2.8 inches and standard deviation of 2.8 inches. The height (+/- 0.1 inch) of the middle 99.7% falls between a low of ?? inches and a high of ?? inches. Please help on how I set this up ...September 10, 2015

history
what motivated the founding father to use the "we the people" in the preamble of the U.S. constitution "September 3, 2015

Community psychology
Can some on think of a public meeting with board of directors that are like involved for a community I need to like a website do to need to write down the public meeting .September 3, 2015

english
Revise the following paragraph, improving it without changing its overall meaning. Pay particular attention to the sentence structure and parts of speech. Imagine a time when there was only one little store. To shop in for a whole town. The only selection there was to choose ...August 30, 2015

Life orientation
The media do not tell us what to think.they tell us what to think about.how is this so.by using three forms of mediaJuly 21, 2015

Algebra
I seriously need help on this math problem. I have tried to work it out myself but the answer is not coming out right. Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x2 + 3x + 7.July 8, 2015

MATH
if alpha and beta are zeroes of the polynomial x2-5x+6,then find the polynomial whose zeroes are root 3 and -root 3July 4, 2015

statics
Walleye is a common game fish. Adult walleye have a length with a mean of 44 cm and a standard deviation of 4 cm and the distribution of lengths is approximately Normal. What fraction of walleye are longer than 52 cm in length?June 22, 2015

math
I am five digit number greater than 40,000 but less than 70,000.My ones digit is more than my ten thousands digit.All my other digit are the same.The sum of my gigit is 19.What number am i?June 22, 2015

theory of evolution
This is for the whole Practice Test if you're a connections academy student or just randomly have these questions for some homework. These are in order, I'm not following what anonymous posted. 1.B 2.C 3.A (@bobpursley you were so wrong, anonymous was correct) 4.D 5.C ...May 18, 2015

Math
She has 2 7/8 cups of flour, she will put 3/4 cup of flour in each cakeApril 29, 2015

algebra need help
The highest temperature ever recorded in a certain town was 88 Fahrenheit . the lowest temperature ever recorded there was -24 Fahrenheit what is the difference between the two temperatures.April 29, 2015

science
Jenny is doing an experiment to see if students in her class like apples or oranges best. She will offer each student an apple or an orange. Then she will record how many students took each kind of fruit.What is a valid prediction Jenny could make about the results of her ...April 28, 2015

Math
Phil bought a block of cheese in the shape of a rectangular prism measuring 8 inches by 4 inches by 2 inches. He cut four pieces of cheese off the block each measuring 2 inches by 3 inches by inch . how much of the block of cheese is left . IS the answer 40in3March 25, 2015

Math
Ok me saying "No idea" is just a metaphor for me saying "I do know, its just that I need a little more help understanding". I am smart its just that this unit is hard and no matter how much I study, I doesn't help. I get that it's annoying but ...March 24, 2015

Math
Which explains why the sequence 64, 4, 1/4,... is arithmetic or geometric? A. The sequence is geometric because it decreases by a factor of 1/16. B. The sequence is arithmetic because it decreases by a factor of 1/16. C. The sequence is geometric because it decreases by a ...March 24, 2015

math
To make 4 1/2 gallons of ice cream, it takes 6 3/10 gallons of milk. How many gallons of milk does it take to make one gallon of ice cream? Do I divide 6 3/10 by 4 1/2February 27, 2015

math
It is recommended that 3/5 of the calories a person consumes come from carbohydrates. If 1/12 of these calories should be from fiber, what fraction of the number of calories should come from fiber?February 27, 2015

science
A mixture of sugar and water can be separated by ______________. Choose ALL that apply. (2 points) Box 1. using a magnet Box 2. boiling the mixture Box 3. evaporating the mixture Box 4. using a filter I picked "Box 2" and "Box 3"February 2, 2015

science
Which of the following represents a heterogeneous mixture? A.saltwater B.air C.bleach and water D.chicken noodle soup I think the answer is D. Chicken noodle soup. I don't know exactly.February 2, 2015

math
Homeroom 101 and Homeroom 102 share a hallway bulletin board. If Homeroom 101 uses 3/5 of their half to display artwork, what fraction of the board is used to display to display Homeroom 101's artwork? Which is correct-3/5 x 1/2 , 3/5 divided by 1/2. or 3/5 x 1/2?January 29, 2015

physicsss
A sled weighing 200.0 N is pulled along a horizontal surface with a horizontal force of 45 N. The coefficient of static friction is 0.65 and of kinetic friction is 0.40. What is the force of friction? So I got Ff=200*.4= 80NJanuary 15, 2015

math
lake superior has a maximum depth of 1.333 thousand feet. there are 5,280 feet in one mile. how deep is lake superior in miles? round to the nearest hundredth if necessary. explain the answerJanuary 14, 2015

english
The _______, accompanied by the media and several tabloid reporters, often visits the hospital to cheer up the wounded soldiers a. actors b. actress c. band members d. singer and his wifeJanuary 8, 2015

math lit, accounting, business studies, cat
Cause I prefer to here other people`s responses,maybe could find out answers from people who were doing the same subjects as mine and ended up succeding in life and living their dreams.rather than being answered by someone who knows me an say more lies.January 2, 2015

Physics
A baseball with mass of 0.145 kg is thrown straight down at the ground. At a particular speed, it has a drag force of 0.4 N acting on it. What is its acceleration at that time? -2.8m/s^2December 21, 2014

Help - involving economics
So if the federal government decided to increase the minimum wage by $1/hr, what could be some economic affects of that? I already thought of the fact that people will get paid more, but I can't think of any more. Can you help?December 5, 2014

Statistics
Assume that a procedure yields a binomial distribution with n=3 trials and a probability of success of p= 0.90. Use a binomial probability table to find the probability that the number of successes x is exactly 1.December 2, 2014

statistics
The 95 percent confidence interval about a mean difference was -3.0 minutes to 6.5 minutes. The null hypothesis that the two population means are equalNovember 16, 2014

Derivative
Okay, I will get to familiarizing myself with the derivative of the trig functionss. Thanks you so much, I really appreciate all the work and patience you tutors have :)November 16, 2014

Derivative
Can you help me find the derivative of y= cos(x)/1+sin(x).. the / is a fraction bar. I have a hard time finding trig derivatives because I don't really know what the derivative of cos,sin ,or tan would be honestly.November 16, 2014

Math
16 students do not prefer school uniform. 4 students prefer school uniform. What percent prefer uniforms and what percent do not. What is the relationship between these two percents?November 13, 2014

Math
Marti works Monday through Saturday, so she has a day off once every 7 days. She needs to give her dog some medicine every 5 days. How often does she give her dog medicine on her day off?November 11, 2014